Young blood has mysterious powers to improve cognition in older animals. Two proteins that boost structures in neurons seem to be behind the effect
Source:
https://www.newscientist.com/article/2205133-two-brain-rejuvenating-proteins-have-been-identified-in-young-blood/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home